Air Intake & Fuel Delivery - Fuel, Air & Emission Symptoms
Common symptoms and diagnostic guides.
Car stalls when shifting gears
Engine stalls specifically when shifting into gear often indicates issues with airflow, fuel delivery, idle control, vacuum leaks, or transmission-related load responses.
Engine behaves oddly during deceleration
Engine behaving oddly during deceleration can be caused by issues in air intake, fuel delivery, ignition, or control systems that disrupt combustion and idle stability when throttle is released.